Wes is right. Don't focus on the technicality of the piece. You don't really need to be that good to be on a stage and entertain people. I know WAY back when my first band started playing out, it didn't take too long to realize that the technical solos I was proud of didn't do squat for most people, but one screaming note held out, bent, dive bombed .. . well everybody went nuts.
I was watching that Gene SImmons Rock Scool show last night, funny. But he said similar sentiments to those kids. It doesn't matter if you are good, or you suck you succeed or fail. Juts get out there, HAVE ENERGY, get PUMPED, SHOW it and the audience feeds on that. If you watch Vai play live . . .it's almost not so much his virtuosity (although i guess really it is, he's an alien), it's his unreal showmanship.
Above all, HAVE FUN.
KOMODO